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Discussion Starter #1
Hey Gang,
This is the third time I've had to replace this cat. Each time I've replaced it with OEM. This time however I do not want to spend the money if I don't have to. I see many aftermarket options that are a quarter of the price.
I can not find anything about a cat comparison. Can someone recommend a good option or have some insight?

Thank you for your help.
 

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2006 CTS-V
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349 Posts
Long tubes and kooks cats will perk it up.

Are you in a state that requires the OEM manifolds? If not swap em out and use a set of high flow cats to remain emmissions compliant.

I pass the emissions checks here in Abu Dhabi every year with long tubes and cats with a good tune.

Trubends offers high flow cats that plug and play if you are stuck with stock manifolds.

-Byron
 

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Super Moderator
'05 CTS-V
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7,852 Posts
This is the third time I've had to replace this cat.
How many miles / kms are on the car, and why does the cat need to be replaced? I'd be wondering what is wrong with the car that is causing the cat to fail prematurely.

As for replacements, what aftermarket options are you finding?
 
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